CrawlJobs Logo
Bitwarden Logo Bitwarden · IT - Software Development

Senior Software Engineer (Cryptography)

United States Employment contract 140000.00 - 200000.00 USD / Year · Job Posted June 28, 2026
Apply Position
Job Link Share

Job Description

As a Senior Software Engineer specializing in Bitwarden's cryptography layer, you will lead the design and development of the key hierarchy and cryptographic protocols that protects millions of users worldwide. You'll own critical encryption systems and complex technical challenges at the intersection of security, scalability, and user experience. This role offers unique opportunities to make significant contributions to both our open-source community and enterprise solutions.

Job Responsibility

  • Support Bitwarden goals by designing, developing and maintaining key hierarchies and cryptographic protocols that are secure and performant
  • Design and enforce secure key management practices across clients and servers to prevent key compromise and protect sensitive cryptographic material
  • Help design usable APIs that abstract crypto correctly for other developers
  • Build and maintain both internal and external documentation and specifications
  • Troubleshoot and resolve complex security vulnerabilities and issues that require deep technical knowledge of our systems

Requirements

  • Strong proficiency and experience in Rust
  • Experience with TypeScript and C# are a plus
  • Experience designing and implementing secure cryptographic protocols
  • Familiarity with OS-level key management APIs and secure storage mechanisms across platforms
  • Practical knowledge of secure key management practices, including key generation, storage, rotation, and revocation
  • Ability to evaluate cryptographic library security, performance, and misuse resistance
  • Collaborative and adaptable mindset
  • Openness and authenticity combined with excellent communication skills
  • Excitement and enthusiasm for open source and for better internet security
  • Excellent problem-solving skills – you might not know all the answers, but you know how to find and communicate the solution

Nice to have

Experience with TypeScript and C# are a plus

What we offer

  • Remote work
  • Supportive team members across the world
  • Learn and grow with #growth-club for personal and professional development
Bitwarden - All Job Offers

Looking for more opportunities?

Search for other job offers that match your skills and interests.

Suggested Tags: Frontend Developer Secretary Talent Manager Salesforce Administrator Data Analyst
Similar Jobs for

Senior Software Engineer (Cryptography)

8 matching positions

Senior Software Engineer — Privacy-First Communications Infrastructure

This company is building a next-generation, privacy-first communication platform...
Location
Location
United States
Salary
Salary:
225000.00 - 400000.00 USD / Year
lawrenceharvey.com Logo
Lawrence Harvey
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Demonstrated excellence outside of work
  • Open-source contributions, side projects, or other evidence of self-directed engineering ambition
  • 3+ years building and operating high-throughput backend systems at scale, with ownership of technical direction
  • Hands-on production experience with PostgreSQL, Redis, and NATS — schema design, query tuning, and failure recovery
  • Strong systems programming fundamentals: concurrency, memory management, networking, and performance profiling (Rust, Go, C++, or equivalent)
  • Experience designing client-facing SDKs or APIs with stable contracts, versioning, and cross-platform consistency
  • Fulltime
Read More
Arrow Right

Senior Software Engineer

The Windows Enterprise and Security (ENS) team builds foundational capabilities ...
Location
Location
India , Bangalore
Salary
Salary:
Not provided
https://www.microsoft.com/ Logo
Microsoft Corporation
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Bachelor's Degree in Computer Science or related technical field AND 4+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR equivalent experience
  • Solid experience building and shipping production software in one or more systems languages (e.g., C/C++/C#) and debugging complex systems
  • Experience designing and developing features in large-scale, performance-sensitive systems, ideally with Windows / OS / systems depth
  • Ability to meet Microsoft, customer and/or government security screening requirements are required for this role. These requirements include but are not limited to the following specialized security screenings: Microsoft Cloud Background Check: This position will be required to pass the Microsoft Cloud background check upon hire/transfer and every two years thereafter.
Job Responsibility
Job Responsibility
  • Security & OS Feature Engineering: Design and implement Windows security and enterprise capabilities that ship at scale across client and/or server
  • Build features across foundational areas such as hardware-backed security, cryptography, identity/authentication, and enterprise management experiences
  • Engineering Excellence (Quality, Reliability, Operability): Produce robust, testable, maintainable code with strong engineering rigor, including diagnostics and operational readiness suitable for global rollout
  • Partner with security and platform stakeholders to ensure designs align to secure-by-default principles and meet compliance/assurance expectations
  • Cross-team Collaboration & Delivery: Collaborate with ENS partner teams in Redmond and across Windows engineering to deliver shared roadmaps and aligned technical outcomes
  • Drive end-to-end execution: requirements → design → implementation → validation → deployment, with an ownership mindset
  • Incident/Live-Site and Continuous Improvement: Contribute to incident response, root-cause analysis, and continuous hardening efforts that improve Windows security posture over time.
  • Fulltime
Read More
Arrow Right

Senior Software Engineer- Platform Security

Join the Microsoft Device Ecosystem and Platform (MDEP) team, where we are build...
Location
Location
United States , Mountain View
Salary
Salary:
119800.00 - 234700.00 USD / Year
https://www.microsoft.com/ Logo
Microsoft Corporation
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Bachelor's Degree in Computer Science or related technical field AND 4+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR equivalent experience
  • 8+ years of software development experience, with significant experience contributing to or leading architectural design
  • Experience with AOSP security features such as device integrity, cryptography, Keymint, and Keystore
  • Expertise in device integrity mechanisms, key attestation processes, key provision strategies, and the management of trusted applications within AOSP
  • Ability to develop and manage trusted applications that operate within a TEE
  • Capability to design and develop robust security solutions that align with industry standards and best practices
  • Strong analytical and problem-solving skills, with the ability to troubleshoot complex software and security issues
  • Leadership skills to guide a team in the development of secure software solutions
  • Strong communication skills with proven track record of representing security technology with customers and device manufacturers
Job Responsibility
Job Responsibility
  • Design, develop, and maintain AOSP security features, applications, and frameworks using Java, Kotlin, C/C++, and other technologies
  • Work across drivers, tools, Linux Kernel, trusted applications, AOSP Framework, and AOSP services
  • Collaborate with developers, testers, product managers, and security experts to ensure the quality, performance, and security of the AOSP platform and applications
  • Research and implement the latest security best practices, standards, and technologies for AOSP development
  • Troubleshoot, debug, and fix security issues and vulnerabilities in AOSP applications and systems
  • Represent the Microsoft MDEP team in various forums with partners, providing industry-leading technical guidance
  • Participate in code reviews to ensure code quality and share knowledge with the team
  • Demonstrate excellent communication skills with the ability to articulate technical design, implementation, and issues clearly and concisely
  • Stay updated on AOSP operating system updates, security trends, and industry best practices
  • Fulltime
Read More
Arrow Right

Senior Engineer – IaaS (Cryptography and Data Protection)

GEICO is seeking an experienced senior Engineer with a passion for building high...
Location
Location
United States , Chevy Chase, MD; Palo Alto, CA; Seattle, WA
Salary
Salary:
105000.00 - 215000.00 USD / Year
geico.com Logo
Geico
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Strong foundations in software engineering
  • Experienced in complex system design and data pipeline and architectures, with good knowledge on Docker and Kubernetes
  • Experience in software development with at least one modern programming language, including Go, Python, Java, or Rust
  • Hands-on experience with public and/or private cloud environments (OpenShift, Kubernetes, Azure, AWS, GCP, etc.)
  • Experience in CI/CD pipeline and related open-source tools like GIT/Jenkin/CircleCI/SonarQube and knowledge in Terraform will be a big plus
  • Strong problem-solving abilities
  • 4+ years of professional PaaS and IaaS experience
  • 3+ years of experience with architecture and design
  • 3+ years of experience with AWS, GCP, Azure, or another cloud service
  • 2+ years of experience in open-source frameworks
Job Responsibility
Job Responsibility
  • Collaborate with product managers, team members, customers, and other engineering teams to solve our toughest problems
  • Develop and execute technical software development strategy for the IaaS domain, while optimizing for performance and efficiency
  • Own accountability for the quality, usability, and performance of the solutions
  • Consistently share best practices and improve processes within and across teams
  • Take on-call and operational support
What we offer
What we offer
  • Comprehensive Total Rewards program that offers personalized coverage tailor-made for you and your family’s overall well-being
  • Financial benefits including market-competitive compensation
  • a 401K savings plan vested from day one that offers a 6% match
  • performance and recognition-based incentives
  • and tuition assistance
  • Access to additional benefits like mental healthcare as well as fertility and adoption assistance
  • Supports flexibility- We provide workplace flexibility as well as our GEICO Flex program, which offers the ability to work from anywhere in the US for up to four weeks per year
  • Fulltime
Read More
Arrow Right
New

Senior Simulation Software & Security Engineer

At Boeing, we innovate and collaborate to make the world a better place. We’re c...
Location
Location
United Kingdom , Crawley
Salary
Salary:
Not provided
boeing.com Logo
Boeing
Expiration Date
July 31, 2026
Flip Icon
Requirements
Requirements
  • Bachelor of Science degree or higher from an accredited course of study in engineering, engineering technology (includes manufacturing engineering technology), chemistry, physics, mathematics, data science, or computer science
  • Very strong proficiency in modern C/C++ and low-level programming skills, ability to write clear, maintainable, and efficient code
  • Experience developing iOS application security architecture
  • Experience with secure cryptography usage and key management
  • Experience with secure storage on iOS
Job Responsibility
Job Responsibility
  • Own, extend, and maintain a large native C++ codebase: design, implement, review, and ship high-quality, cross-platform code for Windows, Linux, and iOS
  • Deliver across the full development lifecycle: feature development, bug fixes, refactors, performance tuning, and ongoing maintenance
  • Build, improve, and troubleshoot automated build systems and CI/CD pipelines to increase reliability, reduce build times, and ensure reproducible cross-platform builds
  • Develop and maintain cross-platform tooling for code generation, packaging, signing, deployment, and release automation in partnership with DevOps
  • Design and implement security architecture and runtime protections for a complex iOS application with native C++ components, including integrity checks, jailbreak/anti-debug detection, and tamper response
  • Protect proprietary C++ libraries and sensitive data from reverse engineering and unauthorized extraction using hardening, obfuscation, and other protection techniques
  • Define secure interfaces between Unreal Engine and native libraries, apply least-privilege and robust input validation, and implement secure handling of downloaded/runtime-accessed content
  • Evaluate and select security-related libraries, frameworks, and third-party protection tools
  • partner with teams to harden build, signing, and release pipelines and ensure secure cloud authentication/token handling
  • Implement and manage security logging, telemetry, and data controls for adversarial detection, and perform security validation activities including static/dynamic analysis, fuzzing, and reverse-engineering assessments
What we offer
What we offer
  • Competitive salary and annual incentive plans
  • Continuous learning - you’ll develop the approach and skills to navigate whatever comes next
  • Success as defined by you - we’ll provide the tools and flexibility, so you can make a meaningful impact, your way
  • Inclusive culture - you’ll be embraced for who you are and empowered to use your voice to help others find theirs
  • Excellent Adoption and Parental leave options
  • 23 days plus UK public holidays and a Winter Break between Christmas and New Year
  • Pension Plan with up to 10% employer contribution
  • Company paid BUPA Medical Plan
  • Short Term Sickness: 100% pay for the first 26 weeks
  • Long Term Sickness: 66.67% of annual salary from 27th week
  • Fulltime
Read More
Arrow Right

Senior Product Security Software Engineer

Crusoe is building the infrastructure for the next era of AI and high-performanc...
Location
Location
United States , San Francisco
Salary
Salary:
175000.00 - 215000.00 USD / Year
crusoe.ai Logo
Crusoe
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 7+ years of experience shipping production software with strong system design skills
  • Deep expertise in Golang and Node.js/JavaScript, with experience building and debugging distributed systems
  • Hands-on experience securing gRPC services, REST APIs, and microservice architectures
  • Strong background implementing authentication and authorization systems using OAuth2, OIDC, SAML, JWT, and RBAC/ABAC models
  • Production experience with application security tooling (SAST, DAST, SCA) and CI/CD integration (e.g., Semgrep, OWASP ZAP, Burp, GitLab)
  • Knowledge of runtime application security and observability tools
  • Solid understanding of cloud-native and containerized environments (Docker, Kubernetes) and network security fundamentals
  • Strong grasp of OWASP Top 10, secure coding practices, cryptography, and secure design principles
Job Responsibility
Job Responsibility
  • Design and build secure frameworks and patterns for high-performance AI workflows, agents, and models to protect our clients
  • Create reusable security patterns for product microservices, focusing on service-to-service authorization, API security, and multi-tenant data isolation that scales across product lines
  • Create developer-facing tools and automation that catch security issues early in the development cycle without slowing teams down
  • Perform security reviews, penetration tests, code reviews, and system design reviews for Crusoe’s fleet of SaaS offerings
What we offer
What we offer
  • Restricted Stock Units in a fast growing, well-funded technology company
  • Health insurance package options that include HDHP and PPO, vision, and dental for you and your dependents
  • Employer contributions to HSA accounts
  • Paid Parental Leave
  • Paid life insurance, short-term and long-term disability
  • Teladoc
  • 401(k) with a 100% match up to 4% of salary
  • Generous paid time off and holiday schedule
  • Cell phone reimbursement
  • Tuition reimbursement
  • Fulltime
Read More
Arrow Right

Senior Staff Security Software Engineer

As a Senior Staff Security Software Engineer on the Atlas team at Boston Dynamic...
Location
Location
United States , Waltham
Salary
Salary:
151284.00 - 208015.00 USD / Year
bostondynamics.com Logo
Boston Dynamics
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Bachelor’s or Master’s Degree in Computer Science or related field
  • Good knowledge of programming languages, such as C/C++, Go or Rust.
  • 6 or more years of hands-on experience as a product security engineer or architect
  • Good understanding of best practices for OS-level security, such as file system permissions, user/group management, and system services.
  • Experience with authentication and authorization tools and techniques
  • Working understanding of cryptography and cryptography primitives
  • Experience with Linux-native security tools, such as iptables/nftables and eBPF
  • Good understanding of communications protocols such as TCP/IP, and secure networking technologies such as TLS and Wireguard/IPsec
  • Ability to communicate effectively with technical and non-technical audiences, including writing documentation, proposals, specifications, design docs, and threat analyses
  • Eligible to work in the United States
Job Responsibility
Job Responsibility
  • Work with the greater security team to analyze and maintain the Atlas platform security profile
  • Hands-on development of specific security-related features
  • Collaborate with Product Management to understand customer needs and requirements.
  • Analyze security Implications of upcoming features and provide guidance to key stakeholders on risks and possible improvements.
  • Act as a trusted advisor on security topics in both existing and upcoming software for the Atlas platform
  • Conduct tests and technical analysis of the product
  • Educate the broader development community on best practices
What we offer
What we offer
  • medical, dental vision, 401(k), paid time off, annual bonus structure
  • Fulltime
Read More
Arrow Right

Senior Staff Security Software Engineer

As a Senior Staff Security Software Engineer on the Atlas team at Boston Dynamic...
Location
Location
United States , Waltham
Salary
Salary:
151284.00 - 208015.00 USD / Year
bostondynamics.com Logo
Boston Dynamics
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Bachelor’s or Master’s Degree in Computer Science or related field
  • Good knowledge of programming languages, such as C/C++, Go or Rust.
  • 6 or more years of hands-on experience as a product security engineer or architect
  • Good understanding of best practices for OS-level security, such as file system permissions, user/group management, and system services.
  • Experience with authentication and authorization tools and techniques
  • Working understanding of cryptography and cryptography primitives
  • Experience with Linux-native security tools, such as iptables/nftables and eBPF
  • Good understanding of communications protocols such as TCP/IP, and secure networking technologies such as TLS and Wireguard/IPsec
  • Ability to communicate effectively with technical and non-technical audiences, including writing documentation, proposals, specifications, design docs, and threat analyses
  • Eligible to work in the United States.
Job Responsibility
Job Responsibility
  • Work with the greater security team to analyze and maintain the Atlas platform security profile
  • Hands-on development of specific security-related features
  • Collaborate with Product Management to understand customer needs and requirements.
  • Analyze security Implications of upcoming features and provide guidance to key stakeholders on risks and possible improvements.
  • Act as a trusted advisor on security topics in both existing and upcoming software for the Atlas platform
  • Conduct tests and technical analysis of the product
  • Educate the broader development community on best practices.
What we offer
What we offer
  • medical, dental vision, 401(k), paid time off and a annual bonus structure.
  • Fulltime
Read More
Arrow Right